Becker doesn't treat people like they're beneath him. So yeah, I'd probably listen.
You don't listen very well, then. Crowley told us where the mutts were. Actually, I would have if you'd asked, since that was the first thing to kill Grantaire. Your logic is flawed, much like your morals.
I'm about 350% done with this conversation. We won't be agreeing. So stop.